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<!DOCTYPE html> < html lang = 'en' >< head >< title > [mp.units.core.syn]</ title >< meta charset = 'UTF-8' />< link rel = 'stylesheet' type = 'text/css' href = '14882.css' />< link rel = 'stylesheet' type = 'text/css' href = 'https://fonts.googleapis.com/css2?family=Noto+Serif' />< link rel = 'stylesheet' type = 'text/css' href = 'https://fonts.googleapis.com/css2?family=Noto+Sans' />< link rel = 'stylesheet' type = 'text/css' href = 'https://fonts.googleapis.com/css2?family=Noto+Sans+Mono' />< link rel = 'icon' href = 'icon.png' />< link rel = 'stylesheet' type = 'text/css' href = 'expanded.css' title = 'Normal' />< link rel = 'alternate stylesheet' type = 'text/css' href = 'colored.css' title = 'Notes and examples colored' />< link rel = 'alternate stylesheet' type = 'text/css' href = 'normative-only.css' title = 'Notes and examples hidden' /></ head >< body >< div class = 'wrapper' >< h1 >< a class = 'secnum' style = 'min-width:50pt' > 5</ a > Quantities and units library < a class = 'abbr_ref' href = 'index.html#quantities' > [quantities]</ a ></ h1 >< h2 >< a class = 'secnum' style = 'min-width:65pt' > 5.2</ a > mp-units module synopses < a class = 'abbr_ref' href = 'mp.units.syns.html#mp.units.core.syn' > [mp.units.syns]</ a ></ h2 >< h3 >< a class = 'secnum' style = 'min-width:80pt' > 5.2.2</ a > Module < span class = 'texttt' > mp_< span class = 'shy' ></ span > units.core</ span > synopsis < a class = 'abbr_ref' > [mp.units.core.syn]</ a ></ h3 >< div class = 'texpara' >< span id = 'module:mp_units.core' >< div class = 'marginalizedparent' >< a class = 'itemDeclLink' href = '#module:mp_units.core' > 🔗</ a ></ div >< span class = 'codeblock' >< span class = 'comment' > // mostly freestanding</ span >
< span class = 'keyword' > export</ span > < span class = 'keyword' > module</ span > mp_units< span class = 'operator' > .</ span > core;
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< span class = 'keyword' > import</ span > std;
< span class = 'keyword' > export</ span > < span class = 'keyword' > namespace</ span > mp_units < span class = 'curlybracket' > {</ span >
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< span class = 'comment' > // < a href = 'qty.utils.html' title = '5.3 Utilities' > [qty.< span class = 'shy' ></ span > utils]</ a > , utilities</ span >
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< span class = 'comment' > // < a href = 'qty.sym.txt.html' title = '5.3.3 Symbol text' > [qty.< span class = 'shy' ></ span > sym.< span class = 'shy' ></ span > txt]</ a > , symbol text</ span >
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< span class = 'keyword' > enum</ span > < span class = 'keyword' > class</ span > < span id = 'lib:character_set' >< a class = 'hidden_link' href = '#lib:character_set' title = '5.2.2 Module mp_­units.core synopsis [mp.units.core.syn]' > character_set</ a ></ span > < span class = 'operator' > :</ span > std< span class = 'operator' > ::</ span > int8_t < span class = 'curlybracket' > {</ span > utf8, portable, default_character_set < span class = 'operator' > =</ span > utf8 < span class = 'curlybracket' > }</ span > ;
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< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span > std< span class = 'operator' > ::</ span > size_t N, std< span class = 'operator' > ::</ span > size_t M< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > class</ span > symbol_text;
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< span class = 'comment' > // < a href = 'qty.sym.expr.html' title = '5.3.4 Symbolic expressions' > [qty.< span class = 'shy' ></ span > sym.< span class = 'shy' ></ span > expr]</ a > , symbolic expressions</ span >
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< span class = 'comment' > // < a href = 'qty.sym.expr.types.html' title = '5.3.4.3 Types' > [qty.< span class = 'shy' ></ span > sym.< span class = 'shy' ></ span > expr.< span class = 'shy' ></ span > types]</ a > , types</ span >
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< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T, < span class = 'keyword' > typename</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span > Ts< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > struct</ span > per;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > F, < span class = 'keyword' > int</ span > Num, < span class = 'keyword' > int</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span > Den< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > struct</ span > power;
< span class = 'comment' > // < a href = 'qty.ref.html' title = '5.4 Reference' > [qty.< span class = 'shy' ></ span > ref]</ a > , reference</ span >
< span class = 'comment' > // < a href = 'qty.dim.html' title = '5.4.2 Dimension' > [qty.< span class = 'shy' ></ span > dim]</ a > , dimension</ span >
< span class = 'comment' > // < a href = 'qty.dim.concepts.html' title = '5.4.2.2 Concepts' > [qty.< span class = 'shy' ></ span > dim.< span class = 'shy' ></ span > concepts]</ a > , concepts</ span >
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< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T< span class = 'anglebracket' > > </ span >
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< span class = 'keyword' > concept</ span > Dimension < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T, < span class = 'keyword' > auto</ span > D< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > concept</ span > DimensionOf < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'comment' > // < a href = 'qty.dim.types.html' title = '5.4.2.3 Types' > [qty.< span class = 'shy' ></ span > dim.< span class = 'shy' ></ span > types]</ a > , types</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span > symbol_text Symbol< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > struct</ span > base_dimension;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a class = 'index' id = 'conceptref:SymbolicConstant' ></ a >< i > SymbolicConstant</ i >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span > Expr< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > struct</ span > derived_dimension;
< span class = 'keyword' > struct</ span > dimension_one;
< span class = 'keyword' > inline</ span > < span class = 'keyword' > constexpr</ span > dimension_one < span id = 'lib:dimension_one' >< a class = 'hidden_link' href = 'qty.dim.types.html#lib:dimension_one' title = '5.4.2.3 Types [qty.dim.types]' > dimension_one</ a ></ span >< span class = 'curlybracket' > {</ span >< span class = 'curlybracket' > }</ span > ;
< span class = 'comment' > // < a href = 'qty.dim.ops.html' title = '5.4.2.4 Operations' > [qty.< span class = 'shy' ></ span > dim.< span class = 'shy' ></ span > ops]</ a > , operations</ span >
< span class = 'keyword' > consteval</ span > < a href = 'qty.dim.concepts.html#concept:Dimension' title = '5.4.2.2 Concepts [qty.dim.concepts]' >< span id = 'conceptref:Dimension' >< span class = 'tcode_in_codeblock' > Dimension</ span ></ span ></ a > < span class = 'keyword' > auto</ span > inverse< span class = 'parenthesis' > (</ span >< a href = 'qty.dim.concepts.html#concept:Dimension' title = '5.4.2.2 Concepts [qty.dim.concepts]' >< span id = 'conceptref:Dimension_' >< span class = 'tcode_in_codeblock' > Dimension</ span ></ span ></ a > < span class = 'keyword' > auto</ span > d< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span > std< span class = 'operator' > ::</ span > intmax_t Num, std< span class = 'operator' > ::</ span > intmax_t Den < span class = 'operator' > =</ span > < span class = 'literal' > 1</ span > , < a href = 'qty.dim.concepts.html#concept:Dimension' title = '5.4.2.2 Concepts [qty.dim.concepts]' >< span id = 'conceptref:Dimension__' >< span class = 'tcode_in_codeblock' > Dimension</ span ></ span ></ a > D< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span >< span class = 'parenthesis' > (</ span > Den < span class = 'operator' > !</ span >< span class = 'operator' > =</ span > < span class = 'literal' > 0</ span >< span class = 'parenthesis' > )</ span >
< span class = 'keyword' > consteval</ span > < a href = 'qty.dim.concepts.html#concept:Dimension' title = '5.4.2.2 Concepts [qty.dim.concepts]' >< span id = 'conceptref:Dimension___' >< span class = 'tcode_in_codeblock' > Dimension</ span ></ span ></ a > < span class = 'keyword' > auto</ span > pow< span class = 'parenthesis' > (</ span > D d< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > consteval</ span > < a href = 'qty.dim.concepts.html#concept:Dimension' title = '5.4.2.2 Concepts [qty.dim.concepts]' >< span id = 'conceptref:Dimension____' >< span class = 'tcode_in_codeblock' > Dimension</ span ></ span ></ a > < span class = 'keyword' > auto</ span > sqrt< span class = 'parenthesis' > (</ span >< a href = 'qty.dim.concepts.html#concept:Dimension' title = '5.4.2.2 Concepts [qty.dim.concepts]' >< span id = 'conceptref:Dimension_____' >< span class = 'tcode_in_codeblock' > Dimension</ span ></ span ></ a > < span class = 'keyword' > auto</ span > d< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > consteval</ span > < a href = 'qty.dim.concepts.html#concept:Dimension' title = '5.4.2.2 Concepts [qty.dim.concepts]' >< span id = 'conceptref:Dimension______' >< span class = 'tcode_in_codeblock' > Dimension</ span ></ span ></ a > < span class = 'keyword' > auto</ span > cbrt< span class = 'parenthesis' > (</ span >< a href = 'qty.dim.concepts.html#concept:Dimension' title = '5.4.2.2 Concepts [qty.dim.concepts]' >< span id = 'conceptref:Dimension_______' >< span class = 'tcode_in_codeblock' > Dimension</ span ></ span ></ a > < span class = 'keyword' > auto</ span > d< span class = 'parenthesis' > )</ span > ;
< span class = 'comment' > // < a href = 'qty.dim.sym.fmt.html' title = '5.4.2.5 Symbol formatting' > [qty.< span class = 'shy' ></ span > dim.< span class = 'shy' ></ span > sym.< span class = 'shy' ></ span > fmt]</ a > , symbol formatting</ span >
< span class = 'keyword' > struct</ span > < span id = 'lib:dimension_symbol_formatting' >< a class = 'hidden_link' href = '#lib:dimension_symbol_formatting' title = '5.2.2 Module mp_­units.core synopsis [mp.units.core.syn]' > dimension_symbol_formatting</ a ></ span > < span class = 'curlybracket' > {</ span >
character_set char_set < span class = 'operator' > =</ span > character_set< span class = 'operator' > ::</ span > default_character_set;
< span class = 'curlybracket' > }</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > CharT < span class = 'operator' > =</ span > < span class = 'keyword' > char</ span > , std< span class = 'operator' > ::</ span > output_iterator< span class = 'anglebracket' > < </ span > CharT< span class = 'anglebracket' > > </ span > Out, < a href = 'qty.dim.concepts.html#concept:Dimension' title = '5.4.2.2 Concepts [qty.dim.concepts]' >< span id = 'conceptref:Dimension________' >< span class = 'tcode_in_codeblock' > Dimension</ span ></ span ></ a > D< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > constexpr</ span > Out dimension_symbol_to< span class = 'parenthesis' > (</ span > Out out, D d, < span class = 'keyword' > const</ span > dimension_symbol_formatting< span class = 'operator' > & </ span > fmt < span class = 'operator' > =</ span > < span class = 'curlybracket' > {</ span >< span class = 'curlybracket' > }</ span >< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span > dimension_symbol_formatting fmt < span class = 'operator' > =</ span > < span class = 'curlybracket' > {</ span >< span class = 'curlybracket' > }</ span > , < span class = 'keyword' > typename</ span > CharT < span class = 'operator' > =</ span > < span class = 'keyword' > char</ span > , < a href = 'qty.dim.concepts.html#concept:Dimension' title = '5.4.2.2 Concepts [qty.dim.concepts]' >< span id = 'conceptref:Dimension_________' >< span class = 'tcode_in_codeblock' > Dimension</ span ></ span ></ a > D< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > consteval</ span > std< span class = 'operator' > ::</ span > string_view dimension_symbol< span class = 'parenthesis' > (</ span > D< span class = 'parenthesis' > )</ span > ;
< span class = 'comment' > // < a href = 'qty.spec.html' title = '5.4.3 Quantity specification' > [qty.< span class = 'shy' ></ span > spec]</ a > , quantity specification</ span >
< span class = 'comment' > // < a href = 'qty.spec.concepts.html' title = '5.4.3.2 Concepts' > [qty.< span class = 'shy' ></ span > spec.< span class = 'shy' ></ span > concepts]</ a > , concepts</ span >
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< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T< span class = 'anglebracket' > > </ span >
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< span class = 'keyword' > concept</ span > QuantitySpec < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
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< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T, < span class = 'keyword' > auto</ span > QS< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > concept</ span > QuantitySpecOf < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
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< span class = 'comment' > // < a href = 'qty.spec.types.html' title = '5.4.3.3 Types' > [qty.< span class = 'shy' ></ span > spec.< span class = 'shy' ></ span > types]</ a > , types</ span >
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< span class = 'comment' > // < a href = 'named.qty.html' title = '5.4.3.3.1 Named' > [named.< span class = 'shy' ></ span > qty]</ a > , named</ span >
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< span class = 'keyword' > struct</ span > is_kind;
< span class = 'keyword' > inline</ span > < span class = 'keyword' > constexpr</ span > is_kind < span id = 'lib:is_kind' >< a class = 'hidden_link' href = 'named.qty.html#lib:is_kind' title = '5.4.3.3.1 Named [named.qty]' > is_kind</ a ></ span >< span class = 'curlybracket' > {</ span >< span class = 'curlybracket' > }</ span > ;
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< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > auto</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'anglebracket' > > </ span >
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< span class = 'keyword' > struct</ span > quantity_spec; < span class = 'comment' > // < i > not defined</ i ></ span >
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< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a class = 'index' id = 'conceptref:BaseDimension' ></ a >< i > BaseDimension</ i > < span class = 'keyword' > auto</ span > Dim, < a class = 'index' id = 'conceptref:QSProperty' ></ a >< i > QSProperty</ i > < span class = 'keyword' > auto</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span > Args< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > struct</ span > quantity_spec< span class = 'anglebracket' > < </ span > Dim, Args< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'anglebracket' > > </ span > ;
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< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a class = 'index' id = 'conceptref:DerivedQuantitySpec' ></ a >< i > DerivedQuantitySpec</ i > < span class = 'keyword' > auto</ span > Eq, < a class = 'index' id = 'conceptref:QSProperty_' ></ a >< i > QSProperty</ i > < span class = 'keyword' > auto</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span > Args< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > struct</ span > quantity_spec< span class = 'anglebracket' > < </ span > Eq, Args< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'anglebracket' > > </ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a class = 'index' id = 'conceptref:NamedQuantitySpec' ></ a >< i > NamedQuantitySpec</ i > < span class = 'keyword' > auto</ span > QS, < a class = 'index' id = 'conceptref:QSProperty__' ></ a >< i > QSProperty</ i > < span class = 'keyword' > auto</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span > Args< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > struct</ span > quantity_spec< span class = 'anglebracket' > < </ span > QS, Args< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'anglebracket' > > </ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a class = 'index' id = 'conceptref:NamedQuantitySpec_' ></ a >< i > NamedQuantitySpec</ i > < span class = 'keyword' > auto</ span > QS, < a class = 'index' id = 'conceptref:DerivedQuantitySpec_' ></ a >< i > DerivedQuantitySpec</ i > < span class = 'keyword' > auto</ span > Eq, < a class = 'index' id = 'conceptref:QSProperty___' ></ a >< i > QSProperty</ i > < span class = 'keyword' > auto</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span > Args< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > struct</ span > quantity_spec< span class = 'anglebracket' > < </ span > QS, Eq, Args< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'anglebracket' > > </ span > ;
< span class = 'comment' > // < a href = 'derived.qty.html' title = '5.4.3.3.2 Derived' > [derived.< span class = 'shy' ></ span > qty]</ a > , derived</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a class = 'index' id = 'conceptref:SymbolicConstant_' ></ a >< i > SymbolicConstant</ i >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span > Expr< span class = 'anglebracket' > > </ span >
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< span class = 'keyword' > struct</ span > derived_quantity_spec;
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< span class = 'comment' > // < a href = 'dimless.qty.html' title = '5.4.3.3.3 Base quantity of dimension one' > [dimless.< span class = 'shy' ></ span > qty]</ a > , base quantity of dimension one</ span >
< span class = 'keyword' > struct</ span > dimensionless;
< span class = 'keyword' > inline</ span > < span class = 'keyword' > constexpr</ span > dimensionless < span id = 'lib:dimensionless' >< a class = 'hidden_link' href = 'dimless.qty.html#lib:dimensionless' title = '5.4.3.3.3 Base quantity of dimension one [dimless.qty]' > dimensionless</ a ></ span >< span class = 'curlybracket' > {</ span >< span class = 'curlybracket' > }</ span > ;
< span class = 'comment' > // < a href = 'kind.of.qty.html' title = '5.4.3.3.4 Kind of' > [kind.< span class = 'shy' ></ span > of.< span class = 'shy' ></ span > qty]</ a > , kind of</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > Q< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > struct</ span > kind_of_;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec_' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > Q< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < span class = 'keyword' > requires</ span > < span class = 'curlybracket' > {</ span > < span class = 'keyword' > typename</ span > kind_of_< span class = 'anglebracket' > < </ span >< span class = 'keyword' > decltype</ span >< span class = 'parenthesis' > (</ span > Q< span class = 'parenthesis' > )</ span >< span class = 'anglebracket' > > </ span > ; < span class = 'curlybracket' > }</ span >
< span class = 'keyword' > inline</ span > < span class = 'keyword' > constexpr</ span > kind_of_< span class = 'anglebracket' > < </ span >< span class = 'keyword' > decltype</ span >< span class = 'parenthesis' > (</ span > Q< span class = 'parenthesis' > )</ span >< span class = 'anglebracket' > > </ span > < span id = 'lib:kind_of' >< a class = 'hidden_link' href = '#lib:kind_of' title = '5.2.2 Module mp_­units.core synopsis [mp.units.core.syn]' > kind_of</ a ></ span >< span class = 'curlybracket' > {</ span >< span class = 'curlybracket' > }</ span > ;
< span class = 'comment' > // < a href = 'qty.spec.ops.html' title = '5.4.3.5 Operations' > [qty.< span class = 'shy' ></ span > spec.< span class = 'shy' ></ span > ops]</ a > , operations</ span >
< span class = 'keyword' > consteval</ span > < a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec__' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > inverse< span class = 'parenthesis' > (</ span >< a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec___' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > q< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span > std< span class = 'operator' > ::</ span > intmax_t Num, std< span class = 'operator' > ::</ span > intmax_t Den < span class = 'operator' > =</ span > < span class = 'literal' > 1</ span > , < a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec____' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > Q< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span >< span class = 'parenthesis' > (</ span > Den < span class = 'operator' > !</ span >< span class = 'operator' > =</ span > < span class = 'literal' > 0</ span >< span class = 'parenthesis' > )</ span >
< span class = 'keyword' > consteval</ span > < a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec_____' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > pow< span class = 'parenthesis' > (</ span > Q q< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > consteval</ span > < a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec______' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > sqrt< span class = 'parenthesis' > (</ span >< a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec_______' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > q< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > consteval</ span > < a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec________' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > cbrt< span class = 'parenthesis' > (</ span >< a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec_________' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > q< span class = 'parenthesis' > )</ span > ;
< span class = 'comment' > // < a href = 'qty.spec.hier.algos.html' title = '5.4.3.6 Hierarchy algorithms' > [qty.< span class = 'shy' ></ span > spec.< span class = 'shy' ></ span > hier.< span class = 'shy' ></ span > algos]</ a > , hierarchy algorithms</ span >
< span class = 'comment' > // < a href = 'qty.spec.conv.html' title = '5.4.3.6.1 Conversion' > [qty.< span class = 'shy' ></ span > spec.< span class = 'shy' ></ span > conv]</ a > , conversion</ span >
< span class = 'keyword' > consteval</ span > < span class = 'keyword' > bool</ span > implicitly_convertible< span class = 'parenthesis' > (</ span >< a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec__________' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > from, < a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec___________' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > to< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > consteval</ span > < span class = 'keyword' > bool</ span > explicitly_convertible< span class = 'parenthesis' > (</ span >< a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec____________' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > from, < a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec_____________' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > to< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > consteval</ span > < span class = 'keyword' > bool</ span > castable< span class = 'parenthesis' > (</ span >< a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec______________' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > from, < a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec_______________' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > to< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > consteval</ span > < span class = 'keyword' > bool</ span > interconvertible< span class = 'parenthesis' > (</ span >< a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec________________' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > qs1, < a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec_________________' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > qs2< span class = 'parenthesis' > )</ span > ;
< span class = 'comment' > // < a href = 'qty.get.kind.html' title = '5.4.3.6.2 Get kind' > [qty.< span class = 'shy' ></ span > get.< span class = 'shy' ></ span > kind]</ a > , < span class = 'tcode_in_codeblock' > get_< span class = 'shy' ></ span > kind</ span ></ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec__________________' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > Q< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > consteval</ span > < i >< span class = 'texttt' > see below</ span ></ i > get_kind< span class = 'parenthesis' > (</ span > Q< span class = 'parenthesis' > )</ span > ;
< span class = 'comment' > // < a href = 'get.common.qty.spec.html' title = '5.4.3.6.3 Get common quantity specification' > [get.< span class = 'shy' ></ span > common.< span class = 'shy' ></ span > qty.< span class = 'shy' ></ span > spec]</ a > , < span class = 'tcode_in_codeblock' > get_< span class = 'shy' ></ span > common_< span class = 'shy' ></ span > quantity_< span class = 'shy' ></ span > spec</ span ></ span >
< span class = 'keyword' > consteval</ span > < a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec___________________' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > get_common_quantity_spec< span class = 'parenthesis' > (</ span >< a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec____________________' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span > qs< span class = 'parenthesis' > )</ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'comment' > // < a href = 'qty.unit.html' title = '5.4.4 Unit' > [qty.< span class = 'shy' ></ span > unit]</ a > , unit</ span >
< span class = 'comment' > // < a href = 'qty.unit.mag.html' title = '5.4.4.2 Magnitude' > [qty.< span class = 'shy' ></ span > unit.< span class = 'shy' ></ span > mag]</ a > , magnitude</ span >
< span class = 'comment' > // < a href = 'qty.unit.mag.concepts.html' title = '5.4.4.2.2 Concepts' > [qty.< span class = 'shy' ></ span > unit.< span class = 'shy' ></ span > mag.< span class = 'shy' ></ span > concepts]</ a > , concepts</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > concept</ span > MagConstant < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > concept</ span > UnitMagnitude < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'comment' > // < a href = 'qty.unit.mag.types.html' title = '5.4.4.2.3 Types' > [qty.< span class = 'shy' ></ span > unit.< span class = 'shy' ></ span > mag.< span class = 'shy' ></ span > types]</ a > , types</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span > symbol_text Symbol, < span class = 'keyword' > long</ span > < span class = 'keyword' > double</ span > Value< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span >< span class = 'parenthesis' > (</ span > Value < span class = 'anglebracket' > > </ span > < span class = 'literal' > 0</ span >< span class = 'parenthesis' > )</ span >
< span class = 'keyword' > struct</ span > mag_constant;
< span class = 'comment' > // < a href = 'qty.unit.mag.ops.html' title = '5.4.4.2.4 Operations' > [qty.< span class = 'shy' ></ span > unit.< span class = 'shy' ></ span > mag.< span class = 'shy' ></ span > ops]</ a > , operations</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a class = 'index' id = 'conceptref:MagArg' ></ a >< i > MagArg</ i > < span class = 'keyword' > auto</ span > V< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > constexpr</ span > < a href = 'qty.unit.mag.concepts.html#concept:UnitMagnitude' title = '5.4.4.2.2 Concepts [qty.unit.mag.concepts]' >< span id = 'conceptref:UnitMagnitude' >< span class = 'tcode_in_codeblock' > UnitMagnitude</ span ></ span ></ a > < span class = 'keyword' > auto</ span > mag < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span > std< span class = 'operator' > ::</ span > intmax_t N, std< span class = 'operator' > ::</ span > intmax_t D< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span >< span class = 'parenthesis' > (</ span > N < span class = 'anglebracket' > > </ span > < span class = 'literal' > 0</ span >< span class = 'parenthesis' > )</ span >
< span class = 'keyword' > constexpr</ span > < a href = 'qty.unit.mag.concepts.html#concept:UnitMagnitude' title = '5.4.4.2.2 Concepts [qty.unit.mag.concepts]' >< span id = 'conceptref:UnitMagnitude_' >< span class = 'tcode_in_codeblock' > UnitMagnitude</ span ></ span ></ a > < span class = 'keyword' > auto</ span > mag_ratio < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a class = 'index' id = 'conceptref:MagArg_' ></ a >< i > MagArg</ i > < span class = 'keyword' > auto</ span > Base, < span class = 'keyword' > int</ span > Num, < span class = 'keyword' > int</ span > Den < span class = 'operator' > =</ span > < span class = 'literal' > 1</ span >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > constexpr</ span > < a href = 'qty.unit.mag.concepts.html#concept:UnitMagnitude' title = '5.4.4.2.2 Concepts [qty.unit.mag.concepts]' >< span id = 'conceptref:UnitMagnitude__' >< span class = 'tcode_in_codeblock' > UnitMagnitude</ span ></ span ></ a > < span class = 'keyword' > auto</ span > mag_power < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'comment' > // constants</ span >
< span class = 'keyword' > inline</ span > < span class = 'keyword' > constexpr</ span > < span class = 'keyword' > struct</ span > < span id = 'lib:pi' >< a class = 'hidden_link' href = '#lib:pi' title = '5.2.2 Module mp_­units.core synopsis [mp.units.core.syn]' > pi</ a ></ span > < span class = 'keyword' > final</ span > < span class = 'operator' > :</ span >
mag_constant< span class = 'anglebracket' > < </ span >< span class = 'curlybracket' > {</ span >< span class = 'literal' > u8"\u03C0"</ span > < span class = 'comment' > /* < span class = 'tcode_in_codeblock' >< span class = 'ucode' > U+03c0</ span > < span class = 'uname' > GREEK SMALL LETTER PI</ span ></ span > */</ span > , < span class = 'literal' > "pi"</ span >< span class = 'curlybracket' > }</ span > ,
std< span class = 'operator' > ::</ span > numbers< span class = 'operator' > ::</ span > pi_v< span class = 'anglebracket' > < </ span >< span class = 'keyword' > long</ span > < span class = 'keyword' > double</ span >< span class = 'anglebracket' > > </ span >< span class = 'anglebracket' > > </ span > < span class = 'curlybracket' > {</ span >
< span class = 'curlybracket' > }</ span > < span id = 'lib:pi_' >< a class = 'hidden_link' href = '#lib:pi' title = '5.2.2 Module mp_­units.core synopsis [mp.units.core.syn]' > pi</ a ></ span > ;
< span class = 'keyword' > inline</ span > < span class = 'keyword' > constexpr</ span > < span class = 'keyword' > auto</ span > \u03C0 < span class = 'comment' > /* < span class = 'tcode_in_codeblock' >< span class = 'ucode' > U+03c0</ span > < span class = 'uname' > GREEK SMALL LETTER PI</ span ></ span > */</ span > < span class = 'operator' > =</ span > pi;
< span class = 'comment' > // < a href = 'qty.unit.traits.html' title = '5.4.4.3 Traits' > [qty.< span class = 'shy' ></ span > unit.< span class = 'shy' ></ span > traits]</ a > , traits</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > U< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > constexpr</ span > < span class = 'keyword' > bool</ span > space_before_unit_symbol < span class = 'operator' > =</ span > < span class = 'literal' > true</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > inline</ span > < span class = 'keyword' > constexpr</ span > < span class = 'keyword' > bool</ span > < a class = 'index' id = 'lib:space_before_unit_symbol,one' ></ a > space_before_unit_symbol< span class = 'anglebracket' > < </ span > one< span class = 'anglebracket' > > </ span > < span class = 'operator' > =</ span > < span class = 'literal' > false</ span > ;
< span class = 'comment' > // < a href = 'qty.unit.concepts.html' title = '5.4.4.4 Concepts' > [qty.< span class = 'shy' ></ span > unit.< span class = 'shy' ></ span > concepts]</ a > , concepts</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > concept</ span > Unit < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > concept</ span > PrefixableUnit < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > concept</ span > AssociatedUnit < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > U, < span class = 'keyword' > auto</ span > QS< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > concept</ span > UnitOf < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'comment' > // < a href = 'qty.unit.types.html' title = '5.4.4.5 Types' > [qty.< span class = 'shy' ></ span > unit.< span class = 'shy' ></ span > types]</ a > , types</ span >
< span class = 'comment' > // < a href = 'qty.scaled.unit.html' title = '5.4.4.5.2 Scaled' > [qty.< span class = 'shy' ></ span > scaled.< span class = 'shy' ></ span > unit]</ a > , scaled</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.unit.mag.concepts.html#concept:UnitMagnitude' title = '5.4.4.2.2 Concepts [qty.unit.mag.concepts]' >< span id = 'conceptref:UnitMagnitude___' >< span class = 'tcode_in_codeblock' > UnitMagnitude</ span ></ span ></ a > < span class = 'keyword' > auto</ span > M, < a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit_' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > U< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > struct</ span > scaled_unit;
< span class = 'comment' > // < a href = 'qty.named.unit.html' title = '5.4.4.5.3 Named' > [qty.< span class = 'shy' ></ span > named.< span class = 'shy' ></ span > unit]</ a > , named</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span > symbol_text Symbol, < span class = 'keyword' > auto</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > struct</ span > named_unit; < span class = 'comment' > // < i > not defined</ i ></ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span > symbol_text Symbol, < a class = 'index' id = 'conceptref:QuantityKindSpec' ></ a >< i > QuantityKindSpec</ i > < span class = 'keyword' > auto</ span > QS< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > struct</ span > named_unit< span class = 'anglebracket' > < </ span > Symbol, QS< span class = 'anglebracket' > > </ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span > symbol_text Symbol, < a class = 'index' id = 'conceptref:QuantityKindSpec_' ></ a >< i > QuantityKindSpec</ i > < span class = 'keyword' > auto</ span > QS, < a href = 'qty.pt.orig.concepts.html#concept:PointOrigin' title = '5.7.2.2 Concepts [qty.pt.orig.concepts]' >< span id = 'conceptref:PointOrigin' >< span class = 'tcode_in_codeblock' > PointOrigin</ span ></ span ></ a > < span class = 'keyword' > auto</ span > PO< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > struct</ span > named_unit< span class = 'anglebracket' > < </ span > Symbol, QS, PO< span class = 'anglebracket' > > </ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span > symbol_text Symbol< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > struct</ span > named_unit< span class = 'anglebracket' > < </ span > Symbol< span class = 'anglebracket' > > </ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span > symbol_text Symbol, < a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit__' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > U< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > struct</ span > named_unit< span class = 'anglebracket' > < </ span > Symbol, U< span class = 'anglebracket' > > </ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span > symbol_text Symbol, < a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit___' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > U, < a href = 'qty.pt.orig.concepts.html#concept:PointOrigin' title = '5.7.2.2 Concepts [qty.pt.orig.concepts]' >< span id = 'conceptref:PointOrigin_' >< span class = 'tcode_in_codeblock' > PointOrigin</ span ></ span ></ a > < span class = 'keyword' > auto</ span > PO< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > struct</ span > named_unit< span class = 'anglebracket' > < </ span > Symbol, U, PO< span class = 'anglebracket' > > </ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span > symbol_text Symbol, < a href = 'qty.unit.concepts.html#concept:AssociatedUnit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:AssociatedUnit' >< span class = 'tcode_in_codeblock' > AssociatedUnit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > U, < a class = 'index' id = 'conceptref:QuantityKindSpec__' ></ a >< i > QuantityKindSpec</ i > < span class = 'keyword' > auto</ span > QS< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > struct</ span > named_unit< span class = 'anglebracket' > < </ span > Symbol, U, QS< span class = 'anglebracket' > > </ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span > symbol_text Symbol, < a href = 'qty.unit.concepts.html#concept:AssociatedUnit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:AssociatedUnit_' >< span class = 'tcode_in_codeblock' > AssociatedUnit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > U, < a class = 'index' id = 'conceptref:QuantityKindSpec___' ></ a >< i > QuantityKindSpec</ i > < span class = 'keyword' > auto</ span > QS,
< a href = 'qty.pt.orig.concepts.html#concept:PointOrigin' title = '5.7.2.2 Concepts [qty.pt.orig.concepts]' >< span id = 'conceptref:PointOrigin__' >< span class = 'tcode_in_codeblock' > PointOrigin</ span ></ span ></ a > < span class = 'keyword' > auto</ span > PO< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > struct</ span > named_unit< span class = 'anglebracket' > < </ span > Symbol, U, QS, PO< span class = 'anglebracket' > > </ span > ;
< span class = 'comment' > // < a href = 'qty.prefixed.unit.html' title = '5.4.4.5.4 Prefixed' > [qty.< span class = 'shy' ></ span > prefixed.< span class = 'shy' ></ span > unit]</ a > , prefixed</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span > symbol_text Symbol, < a href = 'qty.unit.mag.concepts.html#concept:UnitMagnitude' title = '5.4.4.2.2 Concepts [qty.unit.mag.concepts]' >< span id = 'conceptref:UnitMagnitude____' >< span class = 'tcode_in_codeblock' > UnitMagnitude</ span ></ span ></ a > < span class = 'keyword' > auto</ span > M, < a href = 'qty.unit.concepts.html#concept:PrefixableUnit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:PrefixableUnit' >< span class = 'tcode_in_codeblock' > PrefixableUnit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > U< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > struct</ span > prefixed_unit;
< span class = 'comment' > // < a href = 'qty.common.unit.html' title = '5.4.4.5.5 Common' > [qty.< span class = 'shy' ></ span > common.< span class = 'shy' ></ span > unit]</ a > , common</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit____' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > U1, < a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit_____' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > U2, < a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit______' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span > Rest< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > struct</ span > common_unit;
< span class = 'comment' > // < a href = 'qty.derived.unit.html' title = '5.4.4.5.6 Derived' > [qty.< span class = 'shy' ></ span > derived.< span class = 'shy' ></ span > unit]</ a > , derived</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a class = 'index' id = 'conceptref:SymbolicConstant__' ></ a >< i > SymbolicConstant</ i >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span > Expr< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > struct</ span > derived_unit;
< span class = 'comment' > // < a href = 'qty.unit.one.html' title = '5.4.4.5.7 One' > [qty.< span class = 'shy' ></ span > unit.< span class = 'shy' ></ span > one]</ a > , one</ span >
< span class = 'keyword' > struct</ span > one;
< span class = 'keyword' > inline</ span > < span class = 'keyword' > constexpr</ span > one < span id = 'lib:one' >< a class = 'hidden_link' href = 'qty.unit.one.html#lib:one' title = '5.4.4.5.7 One [qty.unit.one]' > one</ a ></ span >< span class = 'curlybracket' > {</ span >< span class = 'curlybracket' > }</ span > ;
< span class = 'comment' > // named derived units of a quantity of dimension one</ span >
< span class = 'keyword' > inline</ span > < span class = 'keyword' > constexpr</ span > < span class = 'keyword' > struct</ span > < span id = 'lib:percent' >< a class = 'hidden_link' href = '#lib:percent' title = '5.2.2 Module mp_­units.core synopsis [mp.units.core.syn]' > percent</ a ></ span > < span class = 'keyword' > final</ span > < span class = 'operator' > :</ span > named_unit< span class = 'anglebracket' > < </ span >< span class = 'literal' > "%"</ span > , mag_ratio< span class = 'anglebracket' > < </ span >< span class = 'literal' > 1</ span > , < span class = 'literal' > 100</ span >< span class = 'anglebracket' > > </ span > < span class = 'operator' > *</ span > one< span class = 'anglebracket' > > </ span > < span class = 'curlybracket' > {</ span >
< span class = 'curlybracket' > }</ span > < span id = 'lib:percent_' >< a class = 'hidden_link' href = '#lib:percent' title = '5.2.2 Module mp_­units.core synopsis [mp.units.core.syn]' > percent</ a ></ span > ;
< span class = 'keyword' > inline</ span > < span class = 'keyword' > constexpr</ span > < span class = 'keyword' > struct</ span > < span id = 'lib:per_mille' >< a class = 'hidden_link' href = '#lib:per_mille' title = '5.2.2 Module mp_­units.core synopsis [mp.units.core.syn]' > per_mille</ a ></ span > < span class = 'keyword' > final</ span > < span class = 'operator' > :</ span >
named_unit< span class = 'anglebracket' > < </ span > symbol_text< span class = 'curlybracket' > {</ span >< span class = 'literal' > u8"\u2030"</ span > < span class = 'comment' > /* < span class = 'tcode_in_codeblock' >< span class = 'ucode' > U+2030</ span > < span class = 'uname' > PER MILLE SIGN</ span ></ span > */</ span > , < span class = 'literal' > "%o"</ span >< span class = 'curlybracket' > }</ span > ,
mag_ratio< span class = 'anglebracket' > < </ span >< span class = 'literal' > 1</ span > , < span class = 'literal' > 1000</ span >< span class = 'anglebracket' > > </ span > < span class = 'operator' > *</ span > one< span class = 'anglebracket' > > </ span > < span class = 'curlybracket' > {</ span >
< span class = 'curlybracket' > }</ span > < span id = 'lib:per_mille_' >< a class = 'hidden_link' href = '#lib:per_mille' title = '5.2.2 Module mp_­units.core synopsis [mp.units.core.syn]' > per_mille</ a ></ span > ;
< span class = 'keyword' > inline</ span > < span class = 'keyword' > constexpr</ span > < span class = 'keyword' > struct</ span > < span id = 'lib:parts_per_million' >< a class = 'hidden_link' href = '#lib:parts_per_million' title = '5.2.2 Module mp_­units.core synopsis [mp.units.core.syn]' > parts_per_million</ a ></ span > < span class = 'keyword' > final</ span > < span class = 'operator' > :</ span >
named_unit< span class = 'anglebracket' > < </ span >< span class = 'literal' > "ppm"</ span > , mag_ratio< span class = 'anglebracket' > < </ span >< span class = 'literal' > 1</ span > , < span class = 'literal' > 1'000'000</ span >< span class = 'anglebracket' > > </ span > < span class = 'operator' > *</ span > one< span class = 'anglebracket' > > </ span > < span class = 'curlybracket' > {</ span >
< span class = 'curlybracket' > }</ span > < span id = 'lib:parts_per_million_' >< a class = 'hidden_link' href = '#lib:parts_per_million' title = '5.2.2 Module mp_­units.core synopsis [mp.units.core.syn]' > parts_per_million</ a ></ span > ;
< span class = 'keyword' > inline</ span > < span class = 'keyword' > constexpr</ span > < span class = 'keyword' > auto</ span > < span id = 'lib:ppm' >< a class = 'hidden_link' href = '#lib:ppm' title = '5.2.2 Module mp_­units.core synopsis [mp.units.core.syn]' > ppm</ a ></ span > < span class = 'operator' > =</ span > parts_per_million;
< span class = 'comment' > // < a href = 'qty.unit.ops.html' title = '5.4.4.6 Operations' > [qty.< span class = 'shy' ></ span > unit.< span class = 'shy' ></ span > ops]</ a > , operations</ span >
< span class = 'keyword' > consteval</ span > < a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit_______' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > inverse< span class = 'parenthesis' > (</ span >< a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > u< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span > std< span class = 'operator' > ::</ span > intmax_t Num, std< span class = 'operator' > ::</ span > intmax_t Den < span class = 'operator' > =</ span > < span class = 'literal' > 1</ span > , < a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit_________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > U< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > consteval</ span > < a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit__________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > pow< span class = 'parenthesis' > (</ span > U u< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > consteval</ span > < a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit___________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > sqrt< span class = 'parenthesis' > (</ span >< a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit____________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > u< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > consteval</ span > < a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit_____________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > cbrt< span class = 'parenthesis' > (</ span >< a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit______________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > u< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > consteval</ span > < a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit_______________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > square< span class = 'parenthesis' > (</ span >< a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit________________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > u< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > consteval</ span > < a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit_________________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > cubic< span class = 'parenthesis' > (</ span >< a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit__________________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > u< span class = 'parenthesis' > )</ span > ;
< span class = 'comment' > // < a href = 'qty.unit.cmp.html' title = '5.4.4.7 Comparison' > [qty.< span class = 'shy' ></ span > unit.< span class = 'shy' ></ span > cmp]</ a > , comparison</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit___________________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > From, < a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit____________________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > To< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > consteval</ span > < span class = 'keyword' > bool</ span > convertible< span class = 'parenthesis' > (</ span > From from, To to< span class = 'parenthesis' > )</ span > ;
< span class = 'comment' > // < a href = 'qty.unit.obs.html' title = '5.4.4.8 Observers' > [qty.< span class = 'shy' ></ span > unit.< span class = 'shy' ></ span > obs]</ a > , observers</ span >
< span class = 'keyword' > consteval</ span > < a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec_____________________' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > get_quantity_spec< span class = 'parenthesis' > (</ span >< a href = 'qty.unit.concepts.html#concept:AssociatedUnit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:AssociatedUnit__' >< span class = 'tcode_in_codeblock' > AssociatedUnit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > u< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > consteval</ span > < a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit_____________________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > get_unit< span class = 'parenthesis' > (</ span >< a href = 'qty.unit.concepts.html#concept:AssociatedUnit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:AssociatedUnit___' >< span class = 'tcode_in_codeblock' > AssociatedUnit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > u< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > consteval</ span > < a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit______________________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > get_common_unit< span class = 'parenthesis' > (</ span >< a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit_______________________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span > us< span class = 'parenthesis' > )</ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'comment' > // < a href = 'qty.unit.sym.fmt.html' title = '5.4.4.10 Symbol formatting' > [qty.< span class = 'shy' ></ span > unit.< span class = 'shy' ></ span > sym.< span class = 'shy' ></ span > fmt]</ a > , symbol formatting</ span >
< span class = 'keyword' > enum</ span > < span class = 'keyword' > class</ span > < span id = 'lib:unit_symbol_solidus' >< a class = 'hidden_link' href = '#lib:unit_symbol_solidus' title = '5.2.2 Module mp_­units.core synopsis [mp.units.core.syn]' > unit_symbol_solidus</ a ></ span > < span class = 'operator' > :</ span > std< span class = 'operator' > ::</ span > int8_t < span class = 'curlybracket' > {</ span >
one_denominator,
always,
never,
default_denominator < span class = 'operator' > =</ span > one_denominator
< span class = 'curlybracket' > }</ span > ;
< span class = 'keyword' > enum</ span > < span class = 'keyword' > class</ span > < span id = 'lib:unit_symbol_separator' >< a class = 'hidden_link' href = '#lib:unit_symbol_separator' title = '5.2.2 Module mp_­units.core synopsis [mp.units.core.syn]' > unit_symbol_separator</ a ></ span > < span class = 'operator' > :</ span > std< span class = 'operator' > ::</ span > int8_t < span class = 'curlybracket' > {</ span >
space,
half_high_dot,
default_separator < span class = 'operator' > =</ span > space
< span class = 'curlybracket' > }</ span > ;
< span class = 'keyword' > struct</ span > < span id = 'lib:unit_symbol_formatting' >< a class = 'hidden_link' href = '#lib:unit_symbol_formatting' title = '5.2.2 Module mp_­units.core synopsis [mp.units.core.syn]' > unit_symbol_formatting</ a ></ span > < span class = 'curlybracket' > {</ span >
character_set char_set < span class = 'operator' > =</ span > character_set< span class = 'operator' > ::</ span > default_character_set;
unit_symbol_solidus solidus < span class = 'operator' > =</ span > unit_symbol_solidus< span class = 'operator' > ::</ span > default_denominator;
unit_symbol_separator separator < span class = 'operator' > =</ span > unit_symbol_separator< span class = 'operator' > ::</ span > default_separator;
< span class = 'curlybracket' > }</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > CharT < span class = 'operator' > =</ span > < span class = 'keyword' > char</ span > , std< span class = 'operator' > ::</ span > output_iterator< span class = 'anglebracket' > < </ span > CharT< span class = 'anglebracket' > > </ span > Out, < a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit________________________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > U< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > constexpr</ span > Out unit_symbol_to< span class = 'parenthesis' > (</ span > Out out, U u, < span class = 'keyword' > const</ span > unit_symbol_formatting< span class = 'operator' > & </ span > fmt < span class = 'operator' > =</ span > < span class = 'curlybracket' > {</ span >< span class = 'curlybracket' > }</ span >< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span > unit_symbol_formatting fmt < span class = 'operator' > =</ span > < span class = 'curlybracket' > {</ span >< span class = 'curlybracket' > }</ span > , < span class = 'keyword' > typename</ span > CharT < span class = 'operator' > =</ span > < span class = 'keyword' > char</ span > , < a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit_________________________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > U< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > consteval</ span > std< span class = 'operator' > ::</ span > string_view unit_symbol< span class = 'parenthesis' > (</ span > U< span class = 'parenthesis' > )</ span > ;
< span class = 'comment' > // < a href = 'qty.ref.concepts.html' title = '5.4.5 Concepts' > [qty.< span class = 'shy' ></ span > ref.< span class = 'shy' ></ span > concepts]</ a > , concepts</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > concept</ span > < a class = 'hidden_link' href = 'qty.ref.concepts.html#concept:Reference' title = '5.4.5 Concepts [qty.ref.concepts]' >< span id = 'concept:Reference' >< span id = 'lib:Reference' >< span class = 'tcode_in_codeblock' > Reference</ span ></ span ></ span ></ a > < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T, < span class = 'keyword' > auto</ span > QS< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > concept</ span > < a class = 'hidden_link' href = 'qty.ref.concepts.html#concept:ReferenceOf' title = '5.4.5 Concepts [qty.ref.concepts]' >< span id = 'concept:ReferenceOf' >< span id = 'lib:ReferenceOf' >< span class = 'tcode_in_codeblock' > ReferenceOf</ span ></ span ></ span ></ a > < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'comment' > // < a href = 'qty.ref.syn.html' title = '5.4.6 Class template reference' > [qty.< span class = 'shy' ></ span > ref.< span class = 'shy' ></ span > syn]</ a > , class template < span class = 'tcode_in_codeblock' > reference</ span ></ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec______________________' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > Q, < a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit__________________________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > U< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > struct</ span > reference;
< span class = 'comment' > // < a href = 'qty.ref.ops.html' title = '5.4.7 Operations' > [qty.< span class = 'shy' ></ span > ref.< span class = 'shy' ></ span > ops]</ a > , operations</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > FwdRep, < a href = 'qty.ref.concepts.html#concept:Reference' title = '5.4.5 Concepts [qty.ref.concepts]' >< span id = 'conceptref:Reference' >< span class = 'tcode_in_codeblock' > Reference</ span ></ span ></ a > R,
< a href = 'qty.rep.concepts.html#concept:RepresentationOf' title = '5.5.4 Concepts [qty.rep.concepts]' >< span id = 'conceptref:RepresentationOf' >< span class = 'tcode_in_codeblock' > RepresentationOf</ span ></ span ></ a >< span class = 'anglebracket' > < </ span > get_quantity_spec< span class = 'parenthesis' > (</ span > R< span class = 'curlybracket' > {</ span >< span class = 'curlybracket' > }</ span >< span class = 'parenthesis' > )</ span >< span class = 'anglebracket' > > </ span > Rep < span class = 'operator' > =</ span > std< span class = 'operator' > ::</ span > remove_cvref_t< span class = 'anglebracket' > < </ span > FwdRep< span class = 'anglebracket' > > </ span >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span >< span class = 'parenthesis' > (</ span >< span class = 'operator' > !</ span >< a class = 'index' id = 'conceptref:OffsetUnit' ></ a >< i > OffsetUnit</ i >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > decltype</ span >< span class = 'parenthesis' > (</ span > get_unit< span class = 'parenthesis' > (</ span > R< span class = 'curlybracket' > {</ span >< span class = 'curlybracket' > }</ span >< span class = 'parenthesis' > )</ span >< span class = 'parenthesis' > )</ span >< span class = 'anglebracket' > > </ span >< span class = 'parenthesis' > )</ span >
< span class = 'keyword' > constexpr</ span > quantity< span class = 'anglebracket' > < </ span > R< span class = 'curlybracket' > {</ span >< span class = 'curlybracket' > }</ span > , Rep< span class = 'anglebracket' > > </ span > < span class = 'keyword' > operator</ span >< span class = 'operator' > *</ span >< span class = 'parenthesis' > (</ span > FwdRep< span class = 'operator' > & </ span >< span class = 'operator' > & </ span > lhs, R r< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > FwdRep, < a href = 'qty.ref.concepts.html#concept:Reference' title = '5.4.5 Concepts [qty.ref.concepts]' >< span id = 'conceptref:Reference_' >< span class = 'tcode_in_codeblock' > Reference</ span ></ span ></ a > R,
< a href = 'qty.rep.concepts.html#concept:RepresentationOf' title = '5.5.4 Concepts [qty.rep.concepts]' >< span id = 'conceptref:RepresentationOf_' >< span class = 'tcode_in_codeblock' > RepresentationOf</ span ></ span ></ a >< span class = 'anglebracket' > < </ span > get_quantity_spec< span class = 'parenthesis' > (</ span > R< span class = 'curlybracket' > {</ span >< span class = 'curlybracket' > }</ span >< span class = 'parenthesis' > )</ span >< span class = 'anglebracket' > > </ span > Rep < span class = 'operator' > =</ span > std< span class = 'operator' > ::</ span > remove_cvref_t< span class = 'anglebracket' > < </ span > FwdRep< span class = 'anglebracket' > > </ span >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span >< span class = 'parenthesis' > (</ span >< span class = 'operator' > !</ span >< a class = 'index' id = 'conceptref:OffsetUnit_' ></ a >< i > OffsetUnit</ i >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > decltype</ span >< span class = 'parenthesis' > (</ span > get_unit< span class = 'parenthesis' > (</ span > R< span class = 'curlybracket' > {</ span >< span class = 'curlybracket' > }</ span >< span class = 'parenthesis' > )</ span >< span class = 'parenthesis' > )</ span >< span class = 'anglebracket' > > </ span >< span class = 'parenthesis' > )</ span >
< span class = 'keyword' > constexpr</ span > < a href = 'qty.syn.html#concept:Quantity' title = '5.6.3 Class template quantity [qty.syn]' >< span id = 'conceptref:Quantity' >< span class = 'tcode_in_codeblock' > Quantity</ span ></ span ></ a > < span class = 'keyword' > auto</ span > < span class = 'keyword' > operator</ span >< span class = 'operator' > /</ span >< span class = 'parenthesis' > (</ span > FwdRep< span class = 'operator' > & </ span >< span class = 'operator' > & </ span > lhs, R< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > FwdQ, < a href = 'qty.ref.concepts.html#concept:Reference' title = '5.4.5 Concepts [qty.ref.concepts]' >< span id = 'conceptref:Reference__' >< span class = 'tcode_in_codeblock' > Reference</ span ></ span ></ a > R, < a href = 'qty.syn.html#concept:Quantity' title = '5.6.3 Class template quantity [qty.syn]' >< span id = 'conceptref:Quantity_' >< span class = 'tcode_in_codeblock' > Quantity</ span ></ span ></ a > Q < span class = 'operator' > =</ span > std< span class = 'operator' > ::</ span > remove_cvref_t< span class = 'anglebracket' > < </ span > FwdQ< span class = 'anglebracket' > > </ span >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > constexpr</ span > < a href = 'qty.syn.html#concept:Quantity' title = '5.6.3 Class template quantity [qty.syn]' >< span id = 'conceptref:Quantity__' >< span class = 'tcode_in_codeblock' > Quantity</ span ></ span ></ a > < span class = 'keyword' > auto</ span > < span class = 'keyword' > operator</ span >< span class = 'operator' > *</ span >< span class = 'parenthesis' > (</ span > FwdQ< span class = 'operator' > & </ span >< span class = 'operator' > & </ span > q, R< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > FwdQ, < a href = 'qty.ref.concepts.html#concept:Reference' title = '5.4.5 Concepts [qty.ref.concepts]' >< span id = 'conceptref:Reference___' >< span class = 'tcode_in_codeblock' > Reference</ span ></ span ></ a > R, < a href = 'qty.syn.html#concept:Quantity' title = '5.6.3 Class template quantity [qty.syn]' >< span id = 'conceptref:Quantity___' >< span class = 'tcode_in_codeblock' > Quantity</ span ></ span ></ a > Q < span class = 'operator' > =</ span > std< span class = 'operator' > ::</ span > remove_cvref_t< span class = 'anglebracket' > < </ span > FwdQ< span class = 'anglebracket' > > </ span >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > constexpr</ span > < a href = 'qty.syn.html#concept:Quantity' title = '5.6.3 Class template quantity [qty.syn]' >< span id = 'conceptref:Quantity____' >< span class = 'tcode_in_codeblock' > Quantity</ span ></ span ></ a > < span class = 'keyword' > auto</ span > < span class = 'keyword' > operator</ span >< span class = 'operator' > /</ span >< span class = 'parenthesis' > (</ span > FwdQ< span class = 'operator' > & </ span >< span class = 'operator' > & </ span > q, R< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.ref.concepts.html#concept:Reference' title = '5.4.5 Concepts [qty.ref.concepts]' >< span id = 'conceptref:Reference____' >< span class = 'tcode_in_codeblock' > Reference</ span ></ span ></ a > R, < span class = 'keyword' > typename</ span > Rep< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < a href = 'qty.rep.concepts.html#concept:RepresentationOf' title = '5.5.4 Concepts [qty.rep.concepts]' >< span id = 'conceptref:RepresentationOf__' >< span class = 'tcode_in_codeblock' > RepresentationOf</ span ></ span ></ a >< span class = 'anglebracket' > < </ span > std< span class = 'operator' > ::</ span > remove_cvref_t< span class = 'anglebracket' > < </ span > Rep< span class = 'anglebracket' > > </ span > , get_quantity_spec< span class = 'parenthesis' > (</ span > R< span class = 'curlybracket' > {</ span >< span class = 'curlybracket' > }</ span >< span class = 'parenthesis' > )</ span >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > constexpr</ span > < span class = 'keyword' > auto</ span > < span class = 'keyword' > operator</ span >< span class = 'operator' > *</ span >< span class = 'parenthesis' > (</ span > R, Rep< span class = 'operator' > & </ span >< span class = 'operator' > & </ span >< span class = 'parenthesis' > )</ span > < span class = 'operator' > =</ span > < span class = 'keyword' > delete</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.ref.concepts.html#concept:Reference' title = '5.4.5 Concepts [qty.ref.concepts]' >< span id = 'conceptref:Reference_____' >< span class = 'tcode_in_codeblock' > Reference</ span ></ span ></ a > R, < span class = 'keyword' > typename</ span > Rep< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < a href = 'qty.rep.concepts.html#concept:RepresentationOf' title = '5.5.4 Concepts [qty.rep.concepts]' >< span id = 'conceptref:RepresentationOf___' >< span class = 'tcode_in_codeblock' > RepresentationOf</ span ></ span ></ a >< span class = 'anglebracket' > < </ span > std< span class = 'operator' > ::</ span > remove_cvref_t< span class = 'anglebracket' > < </ span > Rep< span class = 'anglebracket' > > </ span > , get_quantity_spec< span class = 'parenthesis' > (</ span > R< span class = 'curlybracket' > {</ span >< span class = 'curlybracket' > }</ span >< span class = 'parenthesis' > )</ span >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > constexpr</ span > < span class = 'keyword' > auto</ span > < span class = 'keyword' > operator</ span >< span class = 'operator' > /</ span >< span class = 'parenthesis' > (</ span > R, Rep< span class = 'operator' > & </ span >< span class = 'operator' > & </ span >< span class = 'parenthesis' > )</ span > < span class = 'operator' > =</ span > < span class = 'keyword' > delete</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.ref.concepts.html#concept:Reference' title = '5.4.5 Concepts [qty.ref.concepts]' >< span id = 'conceptref:Reference______' >< span class = 'tcode_in_codeblock' > Reference</ span ></ span ></ a > R, < span class = 'keyword' > typename</ span > Q< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < a href = 'qty.syn.html#concept:Quantity' title = '5.6.3 Class template quantity [qty.syn]' >< span id = 'conceptref:Quantity_____' >< span class = 'tcode_in_codeblock' > Quantity</ span ></ span ></ a >< span class = 'anglebracket' > < </ span > std< span class = 'operator' > ::</ span > remove_cvref_t< span class = 'anglebracket' > < </ span > Q< span class = 'anglebracket' > > </ span >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > constexpr</ span > < span class = 'keyword' > auto</ span > < span class = 'keyword' > operator</ span >< span class = 'operator' > *</ span >< span class = 'parenthesis' > (</ span > R, Q< span class = 'operator' > & </ span >< span class = 'operator' > & </ span >< span class = 'parenthesis' > )</ span > < span class = 'operator' > =</ span > < span class = 'keyword' > delete</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.ref.concepts.html#concept:Reference' title = '5.4.5 Concepts [qty.ref.concepts]' >< span id = 'conceptref:Reference_______' >< span class = 'tcode_in_codeblock' > Reference</ span ></ span ></ a > R, < span class = 'keyword' > typename</ span > Q< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < a href = 'qty.syn.html#concept:Quantity' title = '5.6.3 Class template quantity [qty.syn]' >< span id = 'conceptref:Quantity______' >< span class = 'tcode_in_codeblock' > Quantity</ span ></ span ></ a >< span class = 'anglebracket' > < </ span > std< span class = 'operator' > ::</ span > remove_cvref_t< span class = 'anglebracket' > < </ span > Q< span class = 'anglebracket' > > </ span >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > constexpr</ span > < span class = 'keyword' > auto</ span > < span class = 'keyword' > operator</ span >< span class = 'operator' > /</ span >< span class = 'parenthesis' > (</ span > R, Q< span class = 'operator' > & </ span >< span class = 'operator' > & </ span >< span class = 'parenthesis' > )</ span > < span class = 'operator' > =</ span > < span class = 'keyword' > delete</ span > ;
< span class = 'comment' > // < a href = 'qty.ref.obs.html' title = '5.4.9 Observers' > [qty.< span class = 'shy' ></ span > ref.< span class = 'shy' ></ span > obs]</ a > , observers</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > Q, < span class = 'keyword' > typename</ span > U< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > consteval</ span > < a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec_______________________' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > get_quantity_spec< span class = 'parenthesis' > (</ span > reference< span class = 'anglebracket' > < </ span > Q, U< span class = 'anglebracket' > > </ span >< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > Q, < span class = 'keyword' > typename</ span > U< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > consteval</ span > < a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit___________________________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > get_unit< span class = 'parenthesis' > (</ span > reference< span class = 'anglebracket' > < </ span > Q, U< span class = 'anglebracket' > > </ span >< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > consteval</ span > < a href = 'qty.unit.concepts.html#concept:AssociatedUnit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:AssociatedUnit____' >< span class = 'tcode_in_codeblock' > AssociatedUnit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > get_common_reference< span class = 'parenthesis' > (</ span >< a href = 'qty.unit.concepts.html#concept:AssociatedUnit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:AssociatedUnit_____' >< span class = 'tcode_in_codeblock' > AssociatedUnit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > u1,
< a href = 'qty.unit.concepts.html#concept:AssociatedUnit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:AssociatedUnit______' >< span class = 'tcode_in_codeblock' > AssociatedUnit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > u2,
< a href = 'qty.unit.concepts.html#concept:AssociatedUnit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:AssociatedUnit_______' >< span class = 'tcode_in_codeblock' > AssociatedUnit</ span ></ span ></ a > < span class = 'keyword' > auto</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span > rest< span class = 'parenthesis' > )</ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.ref.concepts.html#concept:Reference' title = '5.4.5 Concepts [qty.ref.concepts]' >< span id = 'conceptref:Reference________' >< span class = 'tcode_in_codeblock' > Reference</ span ></ span ></ a > R1, < a href = 'qty.ref.concepts.html#concept:Reference' title = '5.4.5 Concepts [qty.ref.concepts]' >< span id = 'conceptref:Reference_________' >< span class = 'tcode_in_codeblock' > Reference</ span ></ span ></ a > R2, < a href = 'qty.ref.concepts.html#concept:Reference' title = '5.4.5 Concepts [qty.ref.concepts]' >< span id = 'conceptref:Reference__________' >< span class = 'tcode_in_codeblock' > Reference</ span ></ span ></ a >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span > Rest< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > consteval</ span > < a href = 'qty.ref.concepts.html#concept:Reference' title = '5.4.5 Concepts [qty.ref.concepts]' >< span id = 'conceptref:Reference___________' >< span class = 'tcode_in_codeblock' > Reference</ span ></ span ></ a > < span class = 'keyword' > auto</ span > get_common_reference< span class = 'parenthesis' > (</ span > R1 r1, R2 r2, Rest< span class = 'operator' > .</ span >< span class = 'operator' > .</ span >< span class = 'operator' > .</ span > rest< span class = 'parenthesis' > )</ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'comment' > // < a href = 'qty.rep.html' title = '5.5 Representation' > [qty.< span class = 'shy' ></ span > rep]</ a > , representation</ span >
< span class = 'keyword' > enum</ span > < span class = 'keyword' > class</ span > < span id = 'lib:quantity_character' >< a class = 'hidden_link' href = '#lib:quantity_character' title = '5.2.2 Module mp_­units.core synopsis [mp.units.core.syn]' > quantity_character</ a ></ span > < span class = 'curlybracket' > {</ span > scalar, complex, vector, tensor < span class = 'curlybracket' > }</ span > ;
< span class = 'comment' > // < a href = 'qty.rep.traits.html' title = '5.5.2 Traits' > [qty.< span class = 'shy' ></ span > rep.< span class = 'shy' ></ span > traits]</ a > , traits</ span >
< span class = 'comment' > // < a href = 'qty.fp.traits.html' title = '5.5.2.1 Floating-point' > [qty.< span class = 'shy' ></ span > fp.< span class = 'shy' ></ span > traits]</ a > , floating-point</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > Rep< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > constexpr</ span > < span class = 'keyword' > bool</ span > treat_as_floating_point < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'comment' > // < a href = 'qty.char.traits.html' title = '5.5.2.2 Quantity character' > [qty.< span class = 'shy' ></ span > char.< span class = 'shy' ></ span > traits]</ a > , quantity character</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > constexpr</ span > < span class = 'keyword' > bool</ span > disable_scalar < span class = 'operator' > =</ span > < span class = 'literal' > false</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > inline</ span > < span class = 'keyword' > constexpr</ span > < span class = 'keyword' > bool</ span > < a class = 'index' id = 'lib:disable_scalar,bool' ></ a > disable_scalar< span class = 'anglebracket' > < </ span >< span class = 'keyword' > bool</ span >< span class = 'anglebracket' > > </ span > < span class = 'operator' > =</ span > < span class = 'literal' > true</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > constexpr</ span > < span class = 'keyword' > bool</ span > < a class = 'index' id = 'lib:disable_scalar,std::complex' ></ a > disable_scalar< span class = 'anglebracket' > < </ span > std< span class = 'operator' > ::</ span > complex< span class = 'anglebracket' > < </ span > T< span class = 'anglebracket' > > </ span >< span class = 'anglebracket' > > </ span > < span class = 'operator' > =</ span > < span class = 'literal' > true</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > constexpr</ span > < span class = 'keyword' > bool</ span > disable_complex < span class = 'operator' > =</ span > < span class = 'literal' > false</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > constexpr</ span > < span class = 'keyword' > bool</ span > disable_vector < span class = 'operator' > =</ span > < span class = 'literal' > false</ span > ;
< span class = 'comment' > // < a href = 'qty.val.traits.html' title = '5.5.2.3 Values' > [qty.< span class = 'shy' ></ span > val.< span class = 'shy' ></ span > traits]</ a > , values</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > Rep< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > struct</ span > representation_values;
< span class = 'comment' > // < a href = 'qty.rep.cpos.html' title = '5.5.3 Customization point objects' > [qty.< span class = 'shy' ></ span > rep.< span class = 'shy' ></ span > cpos]</ a > , customization point objects</ span >
< span class = 'keyword' > inline</ span > < span class = 'keyword' > namespace</ span > < i >< span class = 'texttt' > unspecified</ span ></ i > < span class = 'curlybracket' > {</ span >
< span class = 'keyword' > inline</ span > < span class = 'keyword' > constexpr</ span > < i >< span class = 'texttt' > unspecified</ span ></ i > real < span class = 'operator' > =</ span > < i >< span class = 'texttt' > unspecified</ span ></ i > ;
< span class = 'keyword' > inline</ span > < span class = 'keyword' > constexpr</ span > < i >< span class = 'texttt' > unspecified</ span ></ i > imag < span class = 'operator' > =</ span > < i >< span class = 'texttt' > unspecified</ span ></ i > ;
< span class = 'keyword' > inline</ span > < span class = 'keyword' > constexpr</ span > < i >< span class = 'texttt' > unspecified</ span ></ i > modulus < span class = 'operator' > =</ span > < i >< span class = 'texttt' > unspecified</ span ></ i > ;
< span class = 'keyword' > inline</ span > < span class = 'keyword' > constexpr</ span > < i >< span class = 'texttt' > unspecified</ span ></ i > magnitude < span class = 'operator' > =</ span > < i >< span class = 'texttt' > unspecified</ span ></ i > ;
< span class = 'curlybracket' > }</ span >
< span class = 'comment' > // < a href = 'qty.rep.concepts.html' title = '5.5.4 Concepts' > [qty.< span class = 'shy' ></ span > rep.< span class = 'shy' ></ span > concepts]</ a > , concepts</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > concept</ span > Representation < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T, quantity_character Ch< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > concept</ span > RepresentationOf < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'comment' > // < a href = 'qty.html' title = '5.6 Quantity' > [qty]</ a > , quantity</ span >
< span class = 'comment' > // < a href = 'qty.like.html' title = '5.6.2 Interoperability' > [qty.< span class = 'shy' ></ span > like]</ a > , interoperability</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > struct</ span > quantity_like_traits; < span class = 'comment' > // < i > not defined</ i ></ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > concept</ span > QuantityLike < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'comment' > // < a href = 'qty.syn.html' title = '5.6.3 Class template quantity' > [qty.< span class = 'shy' ></ span > syn]</ a > , class template < span class = 'tcode_in_codeblock' > quantity</ span ></ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > concept</ span > Quantity < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > Q, < span class = 'keyword' > auto</ span > QS< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > concept</ span > QuantityOf < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.ref.concepts.html#concept:Reference' title = '5.4.5 Concepts [qty.ref.concepts]' >< span id = 'conceptref:Reference____________' >< span class = 'tcode_in_codeblock' > Reference</ span ></ span ></ a > < span class = 'keyword' > auto</ span > R, < a href = 'qty.rep.concepts.html#concept:RepresentationOf' title = '5.5.4 Concepts [qty.rep.concepts]' >< span id = 'conceptref:RepresentationOf____' >< span class = 'tcode_in_codeblock' > RepresentationOf</ span ></ span ></ a >< span class = 'anglebracket' > < </ span > get_quantity_spec< span class = 'parenthesis' > (</ span > R< span class = 'parenthesis' > )</ span >< span class = 'anglebracket' > > </ span > Rep < span class = 'operator' > =</ span > < span class = 'keyword' > double</ span >< span class = 'anglebracket' > > </ span >
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< span class = 'keyword' > class</ span > quantity;
2024-12-08 08:57:12 +00:00
< span class = 'comment' > // < a href = 'qty.delta.html' title = '5.6.14 Construction helper delta' > [qty.< span class = 'shy' ></ span > delta]</ a > , construction helper < span class = 'tcode_in_codeblock' > delta</ span ></ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.ref.concepts.html#concept:Reference' title = '5.4.5 Concepts [qty.ref.concepts]' >< span id = 'conceptref:Reference_____________' >< span class = 'tcode_in_codeblock' > Reference</ span ></ span ></ a > R< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > struct</ span > delta_;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.ref.concepts.html#concept:Reference' title = '5.4.5 Concepts [qty.ref.concepts]' >< span id = 'conceptref:Reference______________' >< span class = 'tcode_in_codeblock' > Reference</ span ></ span ></ a > < span class = 'keyword' > auto</ span > R< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > constexpr</ span > delta_< span class = 'anglebracket' > < </ span >< span class = 'keyword' > decltype</ span >< span class = 'parenthesis' > (</ span > R< span class = 'parenthesis' > )</ span >< span class = 'anglebracket' > > </ span > < span id = 'lib:delta' >< a class = 'hidden_link' href = '#lib:delta' title = '5.2.2 Module mp_­units.core synopsis [mp.units.core.syn]' > delta</ a ></ span >< span class = 'curlybracket' > {</ span >< span class = 'curlybracket' > }</ span > ;
< span class = 'comment' > // < a href = 'qty.non.mem.conv.html' title = '5.6.15 Non-member conversions' > [qty.< span class = 'shy' ></ span > non.< span class = 'shy' ></ span > mem.< span class = 'shy' ></ span > conv]</ a > , non-member conversions</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit____________________________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > ToU, < i >< span class = 'texttt' > see below</ span ></ i >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > constexpr</ span > < a href = 'qty.syn.html#concept:Quantity' title = '5.6.3 Class template quantity [qty.syn]' >< span id = 'conceptref:Quantity_______' >< span class = 'tcode_in_codeblock' > Quantity</ span ></ span ></ a > < span class = 'keyword' > auto</ span > value_cast< span class = 'parenthesis' > (</ span >< i >< span class = 'texttt' > see below</ span ></ i > q< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.rep.concepts.html#concept:Representation' title = '5.5.4 Concepts [qty.rep.concepts]' >< span id = 'conceptref:Representation' >< span class = 'tcode_in_codeblock' > Representation</ span ></ span ></ a > ToRep, < i >< span class = 'texttt' > see below</ span ></ i >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > constexpr</ span > quantity< span class = 'anglebracket' > < </ span >< i >< span class = 'texttt' > see below</ span ></ i > , ToRep< span class = 'anglebracket' > > </ span > value_cast< span class = 'parenthesis' > (</ span >< i >< span class = 'texttt' > see below</ span ></ i > q< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit_____________________________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > ToU, < a href = 'qty.rep.concepts.html#concept:Representation' title = '5.5.4 Concepts [qty.rep.concepts]' >< span id = 'conceptref:Representation_' >< span class = 'tcode_in_codeblock' > Representation</ span ></ span ></ a > ToRep, < i >< span class = 'texttt' > see below</ span ></ i >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > constexpr</ span > < a href = 'qty.syn.html#concept:Quantity' title = '5.6.3 Class template quantity [qty.syn]' >< span id = 'conceptref:Quantity________' >< span class = 'tcode_in_codeblock' > Quantity</ span ></ span ></ a > < span class = 'keyword' > auto</ span > value_cast< span class = 'parenthesis' > (</ span >< i >< span class = 'texttt' > see below</ span ></ i > q< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.rep.concepts.html#concept:Representation' title = '5.5.4 Concepts [qty.rep.concepts]' >< span id = 'conceptref:Representation__' >< span class = 'tcode_in_codeblock' > Representation</ span ></ span ></ a > ToRep, < a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit______________________________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > ToU, < i >< span class = 'texttt' > see below</ span ></ i >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > constexpr</ span > < a href = 'qty.syn.html#concept:Quantity' title = '5.6.3 Class template quantity [qty.syn]' >< span id = 'conceptref:Quantity_________' >< span class = 'tcode_in_codeblock' > Quantity</ span ></ span ></ a > < span class = 'keyword' > auto</ span > value_cast< span class = 'parenthesis' > (</ span >< i >< span class = 'texttt' > see below</ span ></ i > q< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.syn.html#concept:Quantity' title = '5.6.3 Class template quantity [qty.syn]' >< span id = 'conceptref:Quantity__________' >< span class = 'tcode_in_codeblock' > Quantity</ span ></ span ></ a > ToQ, < i >< span class = 'texttt' > see below</ span ></ i >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > constexpr</ span > < a href = 'qty.syn.html#concept:Quantity' title = '5.6.3 Class template quantity [qty.syn]' >< span id = 'conceptref:Quantity___________' >< span class = 'tcode_in_codeblock' > Quantity</ span ></ span ></ a > < span class = 'keyword' > auto</ span > value_cast< span class = 'parenthesis' > (</ span >< i >< span class = 'texttt' > see below</ span ></ i > q< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec________________________' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > ToQS, < i >< span class = 'texttt' > see below</ span ></ i >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > constexpr</ span > < a href = 'qty.syn.html#concept:Quantity' title = '5.6.3 Class template quantity [qty.syn]' >< span id = 'conceptref:Quantity____________' >< span class = 'tcode_in_codeblock' > Quantity</ span ></ span ></ a > < span class = 'keyword' > auto</ span > quantity_cast< span class = 'parenthesis' > (</ span >< i >< span class = 'texttt' > see below</ span ></ i > q< span class = 'parenthesis' > )</ span > ;
< span class = 'curlybracket' > }</ span >
< span class = 'comment' > // < a href = 'qty.common.type.html' title = '5.6.16 std​::​common_­type specializations' > [qty.< span class = 'shy' ></ span > common.< span class = 'shy' ></ span > type]</ a > , < span class = 'tcode_in_codeblock' > std​ ::​ common_< span class = 'shy' ></ span > type</ span > specializations</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span > mp_units< span class = 'operator' > ::</ span >< a href = 'qty.syn.html#concept:Quantity' title = '5.6.3 Class template quantity [qty.syn]' >< span id = 'conceptref:Quantity_____________' >< span class = 'tcode_in_codeblock' > Quantity</ span ></ span ></ a > Q1, mp_units< span class = 'operator' > ::</ span >< a href = 'qty.syn.html#concept:Quantity' title = '5.6.3 Class template quantity [qty.syn]' >< span id = 'conceptref:Quantity______________' >< span class = 'tcode_in_codeblock' > Quantity</ span ></ span ></ a > Q2< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > struct</ span > std< span class = 'operator' > ::</ span > common_type< span class = 'anglebracket' > < </ span > Q1, Q2< span class = 'anglebracket' > > </ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span > mp_units< span class = 'operator' > ::</ span >< a href = 'qty.syn.html#concept:Quantity' title = '5.6.3 Class template quantity [qty.syn]' >< span id = 'conceptref:Quantity_______________' >< span class = 'tcode_in_codeblock' > Quantity</ span ></ span ></ a > Q, mp_units< span class = 'operator' > ::</ span >< a href = 'qty.rep.concepts.html#concept:Representation' title = '5.5.4 Concepts [qty.rep.concepts]' >< span id = 'conceptref:Representation___' >< span class = 'tcode_in_codeblock' > Representation</ span ></ span ></ a > Value< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > struct</ span > std< span class = 'operator' > ::</ span > common_type< span class = 'anglebracket' > < </ span > Q, Value< span class = 'anglebracket' > > </ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span > mp_units< span class = 'operator' > ::</ span >< a href = 'qty.syn.html#concept:Quantity' title = '5.6.3 Class template quantity [qty.syn]' >< span id = 'conceptref:Quantity________________' >< span class = 'tcode_in_codeblock' > Quantity</ span ></ span ></ a > Q, mp_units< span class = 'operator' > ::</ span >< a href = 'qty.rep.concepts.html#concept:Representation' title = '5.5.4 Concepts [qty.rep.concepts]' >< span id = 'conceptref:Representation____' >< span class = 'tcode_in_codeblock' > Representation</ span ></ span ></ a > Value< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < span class = 'keyword' > requires</ span > < span class = 'curlybracket' > {</ span > < span class = 'keyword' > typename</ span > std< span class = 'operator' > ::</ span > common_type< span class = 'anglebracket' > < </ span > Q, Value< span class = 'anglebracket' > > </ span > ; < span class = 'curlybracket' > }</ span >
< span class = 'keyword' > struct</ span > < a class = 'index' id = 'lib:std::common_type,quantity' ></ a > std< span class = 'operator' > ::</ span > common_type< span class = 'anglebracket' > < </ span > Value, Q< span class = 'anglebracket' > > </ span > < span class = 'operator' > :</ span > std< span class = 'operator' > ::</ span > common_type< span class = 'anglebracket' > < </ span > Q, Value< span class = 'anglebracket' > > </ span > < span class = 'curlybracket' > {</ span >< span class = 'curlybracket' > }</ span > ;
< span class = 'keyword' > namespace</ span > mp_units < span class = 'curlybracket' > {</ span >
< span class = 'comment' > // < a href = 'qty.pt.html' title = '5.7 Quantity point' > [qty.< span class = 'shy' ></ span > pt]</ a > , quantity point</ span >
< span class = 'comment' > // < a href = 'qty.pt.orig.html' title = '5.7.2 Point origin' > [qty.< span class = 'shy' ></ span > pt.< span class = 'shy' ></ span > orig]</ a > , point origin</ span >
< span class = 'comment' > // < a href = 'qty.pt.orig.concepts.html' title = '5.7.2.2 Concepts' > [qty.< span class = 'shy' ></ span > pt.< span class = 'shy' ></ span > orig.< span class = 'shy' ></ span > concepts]</ a > , concepts</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > concept</ span > PointOrigin < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T, < span class = 'keyword' > auto</ span > QS< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > concept</ span > PointOriginFor < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'comment' > // < a href = 'qty.pt.orig.types.html' title = '5.7.2.3 Types' > [qty.< span class = 'shy' ></ span > pt.< span class = 'shy' ></ span > orig.< span class = 'shy' ></ span > types]</ a > , types</ span >
< span class = 'comment' > // < a href = 'qty.abs.pt.orig.html' title = '5.7.2.3.1 Absolute' > [qty.< span class = 'shy' ></ span > abs.< span class = 'shy' ></ span > pt.< span class = 'shy' ></ span > orig]</ a > , absolute</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec_________________________' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > QS< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > struct</ span > absolute_point_origin;
< span class = 'comment' > // < a href = 'qty.rel.pt.orig.html' title = '5.7.2.3.2 Relative' > [qty.< span class = 'shy' ></ span > rel.< span class = 'shy' ></ span > pt.< span class = 'shy' ></ span > orig]</ a > , relative</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.pt.syn.html#concept:QuantityPoint' title = '5.7.4 Class template quantity_­point [qty.pt.syn]' >< span id = 'conceptref:QuantityPoint' >< span class = 'tcode_in_codeblock' > QuantityPoint</ span ></ span ></ a > < span class = 'keyword' > auto</ span > QP< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > struct</ span > relative_point_origin;
< span class = 'comment' > // < a href = 'qty.zeroth.pt.orig.html' title = '5.7.2.3.3 Zeroth' > [qty.< span class = 'shy' ></ span > zeroth.< span class = 'shy' ></ span > pt.< span class = 'shy' ></ span > orig]</ a > , zeroth</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec__________________________' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > QS< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > struct</ span > zeroth_point_origin_;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec___________________________' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > QS< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > constexpr</ span > zeroth_point_origin_< span class = 'anglebracket' > < </ span > QS< span class = 'anglebracket' > > </ span > < span id = 'lib:zeroth_point_origin' >< a class = 'hidden_link' href = '#lib:zeroth_point_origin' title = '5.2.2 Module mp_­units.core synopsis [mp.units.core.syn]' > zeroth_point_origin</ a ></ span >< span class = 'curlybracket' > {</ span >< span class = 'curlybracket' > }</ span > ;
< span class = 'comment' > // < a href = 'qty.def.pt.orig.html' title = '5.7.2.5.2 Default' > [qty.< span class = 'shy' ></ span > def.< span class = 'shy' ></ span > pt.< span class = 'shy' ></ span > orig]</ a > , default</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.ref.concepts.html#concept:Reference' title = '5.4.5 Concepts [qty.ref.concepts]' >< span id = 'conceptref:Reference_______________' >< span class = 'tcode_in_codeblock' > Reference</ span ></ span ></ a > R< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > consteval</ span > < a href = 'qty.pt.orig.concepts.html#concept:PointOriginFor' title = '5.7.2.2 Concepts [qty.pt.orig.concepts]' >< span id = 'conceptref:PointOriginFor' >< span class = 'tcode_in_codeblock' > PointOriginFor</ span ></ span ></ a >< span class = 'anglebracket' > < </ span > get_quantity_spec< span class = 'parenthesis' > (</ span > R< span class = 'curlybracket' > {</ span >< span class = 'curlybracket' > }</ span >< span class = 'parenthesis' > )</ span >< span class = 'anglebracket' > > </ span > < span class = 'keyword' > auto</ span > default_point_origin< span class = 'parenthesis' > (</ span > R< span class = 'parenthesis' > )</ span > ;
< span class = 'comment' > // < a href = 'qty.pt.like.html' title = '5.7.3 Interoperability' > [qty.< span class = 'shy' ></ span > pt.< span class = 'shy' ></ span > like]</ a > , interoperability</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > struct</ span > quantity_point_like_traits; < span class = 'comment' > // < i > not defined</ i ></ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > concept</ span > QuantityPointLike < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'comment' > // < a href = 'qty.pt.syn.html' title = '5.7.4 Class template quantity_­point' > [qty.< span class = 'shy' ></ span > pt.< span class = 'shy' ></ span > syn]</ a > , class template < span class = 'tcode_in_codeblock' > quantity_< span class = 'shy' ></ span > point</ span ></ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > T< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > concept</ span > QuantityPoint < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< span class = 'keyword' > typename</ span > QP, < span class = 'keyword' > auto</ span > V< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > concept</ span > QuantityPointOf < span class = 'operator' > =</ span > < i >< span class = 'texttt' > see below</ span ></ i > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.ref.concepts.html#concept:Reference' title = '5.4.5 Concepts [qty.ref.concepts]' >< span id = 'conceptref:Reference________________' >< span class = 'tcode_in_codeblock' > Reference</ span ></ span ></ a > < span class = 'keyword' > auto</ span > R,
< a href = 'qty.pt.orig.concepts.html#concept:PointOriginFor' title = '5.7.2.2 Concepts [qty.pt.orig.concepts]' >< span id = 'conceptref:PointOriginFor_' >< span class = 'tcode_in_codeblock' > PointOriginFor</ span ></ span ></ a >< span class = 'anglebracket' > < </ span > get_quantity_spec< span class = 'parenthesis' > (</ span > R< span class = 'parenthesis' > )</ span >< span class = 'anglebracket' > > </ span > < span class = 'keyword' > auto</ span > PO < span class = 'operator' > =</ span > default_point_origin< span class = 'parenthesis' > (</ span > R< span class = 'parenthesis' > )</ span > ,
< a href = 'qty.rep.concepts.html#concept:RepresentationOf' title = '5.5.4 Concepts [qty.rep.concepts]' >< span id = 'conceptref:RepresentationOf_____' >< span class = 'tcode_in_codeblock' > RepresentationOf</ span ></ span ></ a >< span class = 'anglebracket' > < </ span > get_quantity_spec< span class = 'parenthesis' > (</ span > R< span class = 'parenthesis' > )</ span >< span class = 'anglebracket' > > </ span > Rep < span class = 'operator' > =</ span > < span class = 'keyword' > double</ span >< span class = 'anglebracket' > > </ span >
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< span class = 'keyword' > class</ span > quantity_point;
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< span class = 'comment' > // < a href = 'qty.point.html' title = '5.7.14 Construction helper point' > [qty.< span class = 'shy' ></ span > point]</ a > , construction helper < span class = 'tcode_in_codeblock' > point</ span ></ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.ref.concepts.html#concept:Reference' title = '5.4.5 Concepts [qty.ref.concepts]' >< span id = 'conceptref:Reference_________________' >< span class = 'tcode_in_codeblock' > Reference</ span ></ span ></ a > R< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > struct</ span > point_;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.ref.concepts.html#concept:Reference' title = '5.4.5 Concepts [qty.ref.concepts]' >< span id = 'conceptref:Reference__________________' >< span class = 'tcode_in_codeblock' > Reference</ span ></ span ></ a > < span class = 'keyword' > auto</ span > R< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > constexpr</ span > point_< span class = 'anglebracket' > < </ span >< span class = 'keyword' > decltype</ span >< span class = 'parenthesis' > (</ span > R< span class = 'parenthesis' > )</ span >< span class = 'anglebracket' > > </ span > < span id = 'lib:point' >< a class = 'hidden_link' href = 'qty.point.html#lib:point' title = '5.7.14 Construction helper point [qty.point]' > point</ a ></ span >< span class = 'curlybracket' > {</ span >< span class = 'curlybracket' > }</ span > ;
< span class = 'comment' > // < a href = 'qty.pt.non.mem.conv.html' title = '5.7.15 Non-member conversions' > [qty.< span class = 'shy' ></ span > pt.< span class = 'shy' ></ span > non.< span class = 'shy' ></ span > mem.< span class = 'shy' ></ span > conv]</ a > , non-member conversions</ span >
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit_______________________________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > ToU, < i >< span class = 'texttt' > see below</ span ></ i >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > constexpr</ span > < a href = 'qty.pt.syn.html#concept:QuantityPoint' title = '5.7.4 Class template quantity_­point [qty.pt.syn]' >< span id = 'conceptref:QuantityPoint_' >< span class = 'tcode_in_codeblock' > QuantityPoint</ span ></ span ></ a > < span class = 'keyword' > auto</ span > value_cast< span class = 'parenthesis' > (</ span >< i >< span class = 'texttt' > see below</ span ></ i > qp< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.rep.concepts.html#concept:Representation' title = '5.5.4 Concepts [qty.rep.concepts]' >< span id = 'conceptref:Representation_____' >< span class = 'tcode_in_codeblock' > Representation</ span ></ span ></ a > ToRep, < i >< span class = 'texttt' > see below</ span ></ i >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > constexpr</ span > quantity_point< span class = 'anglebracket' > < </ span >< i >< span class = 'texttt' > see below</ span ></ i > , < i >< span class = 'texttt' > see below</ span ></ i > , ToRep< span class = 'anglebracket' > > </ span > value_cast< span class = 'parenthesis' > (</ span >< i >< span class = 'texttt' > see below</ span ></ i > qp< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit________________________________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > ToU, < a href = 'qty.rep.concepts.html#concept:Representation' title = '5.5.4 Concepts [qty.rep.concepts]' >< span id = 'conceptref:Representation______' >< span class = 'tcode_in_codeblock' > Representation</ span ></ span ></ a > ToRep, < i >< span class = 'texttt' > see below</ span ></ i >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > constexpr</ span > < a href = 'qty.pt.syn.html#concept:QuantityPoint' title = '5.7.4 Class template quantity_­point [qty.pt.syn]' >< span id = 'conceptref:QuantityPoint__' >< span class = 'tcode_in_codeblock' > QuantityPoint</ span ></ span ></ a > < span class = 'keyword' > auto</ span > value_cast< span class = 'parenthesis' > (</ span >< i >< span class = 'texttt' > see below</ span ></ i > qp< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.rep.concepts.html#concept:Representation' title = '5.5.4 Concepts [qty.rep.concepts]' >< span id = 'conceptref:Representation_______' >< span class = 'tcode_in_codeblock' > Representation</ span ></ span ></ a > ToRep, < a href = 'qty.unit.concepts.html#concept:Unit' title = '5.4.4.4 Concepts [qty.unit.concepts]' >< span id = 'conceptref:Unit_________________________________' >< span class = 'tcode_in_codeblock' > Unit</ span ></ span ></ a > < span class = 'keyword' > auto</ span > ToU, < i >< span class = 'texttt' > see below</ span ></ i >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > constexpr</ span > < a href = 'qty.pt.syn.html#concept:QuantityPoint' title = '5.7.4 Class template quantity_­point [qty.pt.syn]' >< span id = 'conceptref:QuantityPoint___' >< span class = 'tcode_in_codeblock' > QuantityPoint</ span ></ span ></ a > < span class = 'keyword' > auto</ span > value_cast< span class = 'parenthesis' > (</ span >< i >< span class = 'texttt' > see below</ span ></ i > qp< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.syn.html#concept:Quantity' title = '5.6.3 Class template quantity [qty.syn]' >< span id = 'conceptref:Quantity_________________' >< span class = 'tcode_in_codeblock' > Quantity</ span ></ span ></ a > ToQ, < i >< span class = 'texttt' > see below</ span ></ i >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > constexpr</ span > < a href = 'qty.pt.syn.html#concept:QuantityPoint' title = '5.7.4 Class template quantity_­point [qty.pt.syn]' >< span id = 'conceptref:QuantityPoint____' >< span class = 'tcode_in_codeblock' > QuantityPoint</ span ></ span ></ a > < span class = 'keyword' > auto</ span > value_cast< span class = 'parenthesis' > (</ span >< i >< span class = 'texttt' > see below</ span ></ i > qp< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.pt.syn.html#concept:QuantityPoint' title = '5.7.4 Class template quantity_­point [qty.pt.syn]' >< span id = 'conceptref:QuantityPoint_____' >< span class = 'tcode_in_codeblock' > QuantityPoint</ span ></ span ></ a > ToQP, < i >< span class = 'texttt' > see below</ span ></ i >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > constexpr</ span > < a href = 'qty.pt.syn.html#concept:QuantityPoint' title = '5.7.4 Class template quantity_­point [qty.pt.syn]' >< span id = 'conceptref:QuantityPoint______' >< span class = 'tcode_in_codeblock' > QuantityPoint</ span ></ span ></ a > < span class = 'keyword' > auto</ span > value_cast< span class = 'parenthesis' > (</ span >< i >< span class = 'texttt' > see below</ span ></ i > qp< span class = 'parenthesis' > )</ span > ;
< span class = 'keyword' > template</ span >< span class = 'anglebracket' > < </ span >< a href = 'qty.spec.concepts.html#concept:QuantitySpec' title = '5.4.3.2 Concepts [qty.spec.concepts]' >< span id = 'conceptref:QuantitySpec____________________________' >< span class = 'tcode_in_codeblock' > QuantitySpec</ span ></ span ></ a > < span class = 'keyword' > auto</ span > ToQS, < i >< span class = 'texttt' > see below</ span ></ i >< span class = 'anglebracket' > > </ span >
< span class = 'keyword' > requires</ span > < i >< span class = 'texttt' > see below</ span ></ i >
< span class = 'keyword' > constexpr</ span > < a href = 'qty.pt.syn.html#concept:QuantityPoint' title = '5.7.4 Class template quantity_­point [qty.pt.syn]' >< span id = 'conceptref:QuantityPoint_______' >< span class = 'tcode_in_codeblock' > QuantityPoint</ span ></ span ></ a > < span class = 'keyword' > auto</ span > quantity_cast< span class = 'parenthesis' > (</ span >< i >< span class = 'texttt' > see below</ span ></ i > qp< span class = 'parenthesis' > )</ span > ;
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< span class = 'curlybracket' > }</ span >
</ span ></ span ></ div ></ div ></ body ></ html >
